
# 类型转换
numStr1 = "50"
numStr2 = "150"
# numStr3 = numStr1 + numStr2;
# print(numStr3)

num1=123
num2=456
num3=num1+num2
print(num3)

# 类型转换
# int（）
# float()
# bool()
# str()

num1 = int(numStr1)
num2 = int(numStr2)
num3 = num1+num2
print(num3)

